Stereo-motion cooperation and the use ofmotion disparity in the visual perception of 3-D structure

When an observer views a moving scene binocularly, both motion parallax and binocular disparity provide depth information. In Experiments lA-1C, we measured sensitivity to surface curvature when these depth cues were available either individually or simultaneously. When the depth cues yielded comparable sensitivity to surface curvature, we found that curvature detection was easier with the cues present simultaneously, rather than individually. For 2 of the 6 subjects, this effect was stronger when the component of frontal translation of the surface was vertical, rather than horizontal. No such anisotropy was found for the 4 other subjects. If a moving object is observed binocularly, the patterns of optic flow are different on the left and right retinae. We have suggested elsewhere (Cornilleau-Pérès & Droulez, in press) that this motion disparity might be used as avisual cue for the perception of a 3-D structure. Our model consisted in deriving binocular disparity from the left and right distributions of vertical velocities, rather than from luminous intensities, as has been done in classical studies on stereoscopic vision. The model led to some predictions concerning the detection of surface curvature from motion disparity in the presence or absence of intensity-based disparity (classically termedbinocular disparity). In a second set of experiments, we attempted to test these predictions, and we failed to validate our theoretical scheme from a physiological point of view.     

L’évaluation de la formation à l’harmonisation travail-vie personnelle : bilan et perspectives de recherche

The present article offers a review of the literature evaluating work-life balance training (which includes work-family balance training). The research, spanning over 43 databases, allowed the identification of 17 pertinent peer-reviewed articles. The selected studies are analysed in light of their main characteristics (design, sample, intervention, outcomes, etc.). The analysis shows that the offering of work-life balance training benefits both employees and managers. The methodological presuppositions and limitations of the selected studies are then critically examined. Lastly, possible topics for further research, such as the importance of conducting comparative researches and of adopting quasi-experimental and experimental protocols, are suggested in manner of conclusion.     

Toward a multidimensional definition of sportsmanship

Abstract

One major problem with research conducted on sportsmanship is the absence of an accepted definition. The purpose of this study was to attempt to derive a definition of sportsmanship by applying premises from social psychological theories and research. A major assumption of this perspective is that sportsmanship meanings and labels attached to given behaviors are learned through interpersonal interactions with various sport participants and that eventually a consensual agreement develops regarding the nature of sportsmanship. It thus follows that a meaningful definition of sportsmanship should be obtained through the athletes themselves. In this study, 1056 male and female athletes completed a questionnaire which contained various items pertaining to sportsmanship. Results from a factor analysis revealed the presence of 5 factors corresponding to the respect and concern for: a) one's full commitment toward sport participation, b) the rules and officials. c) social conventions, d) the opponent, as well as e) a negative approach toward sport participation. Implications of this multidimensional definition for future sportsmanship research are drawn.     

The role of stressful life events on the cortisol reactivity patterns of breast cancer survivors

Objective: Atypical patterns of cortisol secretion following an acute stressor have been commonly reported in breast cancer survivors. Stressful life events have been associated with blunted acute cortisol levels in other populations. The purpose of this study was to explore the role of stressful life events on cortisol secretion patterns of breast cancer survivors following an acute stressor.

Design: The Trier Social Stress (TSST) was used to elicit a moderate stress response in breast cancer survivors (n = 19) and a control group (n = 17). Saliva samples were collected before, during and after the TSST to provide cortisol concentrations. During recovery, we recorded the frequency and subjective impact of stressful life events in the past year using the Life Experience Survey.

Results: Simple regressions analyses were performed; results suggest no group differences between the total number of stressful life events and their subjective impact. However, the total number of stressful life events as well as their subjective impact correlated negatively with the peak cortisol concentration in breast cancer survivors.

Conclusions: The cumulative effect of stressful life events, positive and negative, may impact the endocrine stress system of breast cancer survivors more so than that of women with no history of cancer.     

Couples’ Negative Interaction Behaviors and Borderline Personality Disorder

Borderline personality disorder (BPD) is a severe mental health problem predisposing to dysfunctional interaction behaviors and negative couple outcomes. This study aimed to assess, through direct observation, the quality of relationships of couples in which women were diagnosed with BPD. The sample consisted of 28 couples in which the woman had BPD, and 82 community couples. Couples’ interactions were coded using three scales—withdrawal/ avoidance, dominance, and criticism/attack/conflict—from the Global Couple Interaction Coding System. Couples in which the women had BPD evidenced significantly more negative behaviors, particularly dominance behaviors, than community couples. Moreover, in BPD couples, women adopted Criticism/Attack/Conflict behaviors more frequently than men.     

Timing of the transition to motherhood and union quality: The moderator role of union length

Researchers have examined the contribution of women’s age at first pregnancy to the prediction of union quality across the transition to motherhood, but the emerging picture is inconsistent. The authors investigated the moderator role of union length in the relationship between the 2 variables. A sample of 143 Canadian women completed the Dyadic Adjustment Scale during pregnancy and at 6 months postpartum. As predicted, after partialing out the influence of other demographic variables, union length moderated the relationship between maternal age and changes in union quality across the transition, p < .001. The results showed that postponing motherhood to a later age has positive effects on women’s union quality only among those who are in long‐term relationships.     

The Role of Parental Stress, Mother’s Childhood Abuse and Perceived Consequences of Violence in Predicting Attitudes and Attribution in Favor of Corporal Punishment

We investigate maternal attitudes toward corporal punishment and the attribution of blame to the child on the basis of data gathered from a population survey of a representative sample of mothers and mother figures. A total of 3,148 women living at least half of the time with a child participated in a telephone survey. The independent variables included in the multivariate model predicting maternal attitudes and attributions include the child’s, the mother’s and the family’s characteristics and social support. Results of the multiple regression analysis demonstrate the unique contribution of variables according to the mother’s characteristics (mother’s sensitivity to the consequences of violence, mother’s experience of childhood violence and parental stress related to child’s temperament). These results partially support the importance of prevention programs that would reduce stress and increase the level of parental empathy through the means of parental training.     

Being a psychoanalyst: An everyday audacity1

This paper is the work of fi ve psychoanalysts who came together as a group in order to refl ect on their work as analysts. How are we analysts to identify the unconscious resistances that may sometimes hold us back from offering psychoanalysis to some patients? Do these resistances sometimes hamper the inner freedom that we require in order to maintain a psychoanalytic focus once that process is under way? How do we manage from time to time to overcome these resistances or, better, make use of them in order to develop our understanding of the unconscious dynamics that create the link between analyst and patient? The authors discuss these issues with particular reference to clinical situations taken from classic psychoanalytic treatment cases during which the analyst had to fi nd within him‐ or herself the audacity to be a psychoanalyst. Each clinical situation is different: preliminary interviews, in the course of the actual treatment, issues that emerge in the training of candidates. One of the signifi cant features of this group lies in the fact that the participants are at different stages in their development as psychoanalysts (student, associate member, full member, training analyst). This means that their experiences complement one another and encourage a discussion of issues such as how psychoanalysis can be passed on, and the relationship between supervisor and supervisee.